From patchwork Fri Nov 10 09:27:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yanteng Si X-Patchwork-Id: 13452258 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55C2D125AF for ; Fri, 10 Nov 2023 09:27:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B8F962BE36 for ; Fri, 10 Nov 2023 01:27:52 -0800 (PST) Received: from loongson.cn (unknown [112.20.112.120]) by gateway (Coremail) with SMTP id _____8DxqOqX901lV7Q4AA--.10248S3; Fri, 10 Nov 2023 17:27:51 +0800 (CST) Received: from localhost.localdomain (unknown [112.20.112.120]) by localhost.localdomain (Coremail) with SMTP id AQAAf8BxK9yQ901l5_o9AA--.4030S5; Fri, 10 Nov 2023 17:27:49 +0800 (CST) From: Yanteng Si To: andrew@lunn.ch, hkallweit1@gmail.com, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com Cc: Yanteng Si , fancer.lancer@gmail.com, Jose.Abreu@synopsys.com, chenhuacai@loongson.cn, linux@armlinux.org.uk, dongbiao@loongson.cn, guyinggang@loongson.cn, netdev@vger.kernel.org, loongarch@lists.linux.dev, chris.chenfeiyang@gmail.com Subject: [PATCH v5 8/9] net: stmmac: dwmac-loongson: Disable flow control for GMAC Date: Fri, 10 Nov 2023 17:27:33 +0800 Message-Id: <286060399a5b9787a86053c10c5fad93cbf5d0cc.1699533745.git.siyanteng@loongson.cn> X-Mailer: git-send-email 2.31.4 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8BxK9yQ901l5_o9AA--.4030S5 X-CM-SenderInfo: pvl1t0pwhqwqxorr0wxvrqhubq/ X-Coremail-Antispam: 1Uk129KBj93XoW7ArWkuF1rXF43JF1ftw4rCrX_yoW8KFyrpw srAa4j9ryDKF17Jan5Aw1kZFy5WayUKFW7uayIkwsa9a92k34qqr1FvFWjyF17urWDWFWa qr1UCr1DCFnxJrbCm3ZEXasCq-sJn29KB7ZKAUJUUUU3529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUBvb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAF wI0_Gr1j6F4UJwAaw2AFwI0_JF0_Jw1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2 xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_ Wrv_ZF1lYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2 Ij64vIr41lc7CjxVAaw2AFwI0_JF0_Jw1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Y z7v_Jr0_Gr1l4IxYO2xFxVAFwI0_JF0_Jw1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x 8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE 2Ix0cI8IcVAFwI0_Ar0_tr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwCI42IY6x AIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIE c7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07jxxhdUUUUU= X-Patchwork-Delegate: kuba@kernel.org Loongson GMAC does not support Flow Control feature. Set flags to disable it. Signed-off-by: Yanteng Si Signed-off-by: Feiyang Chen Signed-off-by: Yinggang Gu --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 2 ++ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++--- include/linux/stmmac.h | 1 + 3 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c index 575ec2d96741..306b8d53e19c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -171,6 +171,8 @@ static int loongson_gmac_config(struct pci_dev *pdev, break; } + plat->flags |= FIELD_PREP(STMMAC_FLAG_DISABLE_FLOW_CONTROL, 1); + return ret; } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index aafc75fa14a0..b5cbdbdabebd 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1235,9 +1235,9 @@ static int stmmac_phy_setup(struct stmmac_priv *priv) xpcs_get_interfaces(priv->hw->xpcs, priv->phylink_config.supported_interfaces); - priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | - MAC_10FD | MAC_100FD | - MAC_1000FD; + priv->phylink_config.mac_capabilities = MAC_10FD | MAC_100FD | MAC_1000FD; + if (!FIELD_GET(STMMAC_FLAG_DISABLE_FLOW_CONTROL, priv->plat->flags)) + priv->phylink_config.mac_capabilities |= MAC_ASYM_PAUSE | MAC_SYM_PAUSE; stmmac_set_half_duplex(priv); diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 2b8f5dc09920..f3e1b68c2946 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -222,6 +222,7 @@ struct dwmac4_addrs { #define STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY BIT(12) #define STMMAC_FLAG_DISABLE_HALF_DUPLEX BIT(13) #define STMMAC_FLAG_DISABLE_FORCE_1000 BIT(14) +#define STMMAC_FLAG_DISABLE_FLOW_CONTROL BIT(15) struct plat_stmmacenet_data { int bus_id;